The post on Monday is what I did Saturday afternoon in the sunshine, however I spent the morning doing something a lot less pleasant. I was cleaning all our door frames and skirting boards.
It sounds a little OCD, but I noticed this last week on the bedroom door
The only thing I can think it's from is where the cats go in and out and rub against the frame and the door. Gross. So I got out the vinegar spray (from the pound shop a while back and it luckily came off pretty easily.